MITSUBISHI HG-JR103T-S121010 AC Servo motor 123V 5.6A 1kW 3000rpm

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The MITSUBISHI HG-JR103T-S121010 is an AC servo motor from the HG-JR series, designed for precise motion control in CNC machines and industrial automation systems. With a rated output of 1 kW and a base speed of 3000 rpm, it is widely used as a replacement motor or spare part for feed axes, indexing systems, and auxiliary positioning applications.

This servo motor delivers smooth speed regulation and controlled torque when paired with the appropriate Mitsubishi servo amplifier. Its electrical characteristics, including a 123 V class rating and a rated current of 5.6 A, make it suitable for 1 kW drive systems that require frequent start-stop cycles and accurate contouring performance on machining centers and CNC lathes.

The HG-JR103T-S121010 provides a rated torque of 3.18 Nm and a maximum torque of 9.55 Nm, making it suitable for medium-size linear axes, compact rotary tables, and automated handling equipment. This version is supplied without a holding brake and features a straight shaft configuration, making it particularly suitable for horizontal axes and applications where an external braking system is not required.

In a CNC control architecture, the motor operates in a closed-loop system with the servo drive to provide accurate positioning and smooth interpolation throughout its operating range up to 3000 rpm. It is commonly installed on machining center feed axes, turning machine axes, gantry systems, indexing units, and material handling mechanisms that demand repeatable positioning and stable thermal performance during continuous production.

The compact design of the HG-JR series makes it well suited for retrofit projects where installation space and mounting clearances are limited. When replacing an existing motor, matching the complete reference HG-JR103T-S121010 ensures compatibility with the original mechanical configuration, connectors, and feedback system. In many cases, the existing power and feedback cables can be reused, reducing machine downtime and minimizing commissioning work.

Manufactured in Japan, the MITSUBISHI HG-JR series is recognized for its reliability and durability in demanding industrial environments. This model is frequently kept in spare parts inventory to allow rapid replacement when machines experience motor faults, excessive vibration, bearing wear, or performance degradation.

Each unit can be inspected and tested by qualified engineers on dedicated servo test benches and CNC simulators to verify electrical integrity and feedback communication before shipment. Products are packaged using protective materials suitable for industrial transportation and are supplied with standard warranty coverage. Repair services, exchange programs, and refurbished units may also be available depending on stock and application requirements.

Frequently asked questions about HG-JR103T-S121010:

Which servo amplifier series should be paired with this 1 kW motor?
Use a Mitsubishi MELSERVO amplifier sized for 1 kW and compatible with the voltage and feedback specification of this exact code. Confirm drive capacity and parameter set against the motor nameplate and datasheet before commissioning.

Is it a drop-in replacement for other HG-JR103T motors with different suffixes?
Match the full code including suffix S121010. Suffix characters define mechanical options and feedback configuration, so using the exact reference helps ensure connector, shaft and encoder compatibility.

What feedback type does this model use?
Feedback specification follows the build code. Verify the encoder type on the motor label and align drive parameters accordingly to maintain closed-loop performance.

Can I reuse my existing power and feedback cables?
If the previous motor shares the same full code and connector options, existing harnesses are often reusable. Inspect connectors and cable ratings for current and voltage suitability before reinstallation.